29 Nov
2001
29 Nov
'01
6:34 a.m.
Depending on the Eprom installed a prompt is not always to
be expected. Mine has 3.mumble and does not prompt.
However it does boot most anything bootable it can find including
SCSI hard disk.
Allison
-----Original Message-----
From: Richard Erlacher <edick(a)idcomm.com>
To: classiccmp(a)classiccmp.org <classiccmp(a)classiccmp.org>
Date: Thursday, November 29, 2001 11:13 AM
Subject: Re: Ampro Littleboard problems..
Don, the number on the back of the drive really is FD-54B. As far as
termination, I don't know. There is no place for what I would call a
"traditional" floppy termination pack. There is a SIP resistor soldered
into the board right ahead of the data connector. I don't have the drive
in front of me now, but I don't recall seeing "SM" as being a jumper
position. I do recall the "HS" labelling however.
I don't recall anything marked "PM" at all.
Thanks!
g.
Though there are many "Little Board" products
from Ampro, the ones I have,
which
are the originals from back in '83 or so, will
produce a prompt if you (1)
have
no floppy attached, or (2) don't have a diskette in
it. If it's not
producing
that prompt, I'd say you need to look elsewhere
than the floppy drive.
Aside from single-sided drives, I've never encountered a 48TPI drive that
this
machine wouldn't boot once it's jumpered for
DS0.
Nevertheless, if it's not producing the prompt, something's seriously
wrong.
There aren't many parts that could be broken, but
perhaps you should look
into
which one it might be. My experience has been that if
it doesn't produce
that
prompt, it won't boot under any circumstances.
Dick
----- Original Message -----
From: "Gene Buckle" <geneb(a)deltasoft.com>
To: <classiccmp(a)classiccmp.org>
Sent: Thursday, November 29, 2001 8:58 AM
Subject: Re: Ampro Littleboard problems..
> > On Wed, 28 Nov 2001, Gene Buckle wrote:
> >
> > > I've got a Littleboard I'm tring to bring up. When I feed it a
disk,
> > > and power it up, it will select the drive, spin it and shut down
after
> > > about 3 to 5 seconds. I never hear a
head step. Nothing shows up on
the
> > > serial port (port a, 9600). The drive
I'm using is a Teac
FD-54B-02-U
and the two
jumpers are set to DS0 and IU.
I presume that is a typo and it really is an FD-55B. Is it terminated?
I assume a straight cable since it is selected. The FD-55s that I use
are jumpered DS0 (for straight cable), HS, IU, and SM on the two main
jumper headers. PM is also jumpered on its own header.